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– Send another person to get medical aid.
Safety inspection guide
The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service personnel from injury. This guide addresses only those items. However, good judgment should be used to identify potential safety hazards due to attachment of features or options not covered by this inspection guide.
If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.
Consider these conditions and the safety hazards they present:
• Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock).
• Explosive hazards, such as a damaged CRT face or bulging capacitor
• Mechanical hazards, such as loose or missing hardware
The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and the power cord disconnected.
Checklist:
1. Check exterior covers for damage (loose, broken, or sharp edges).
2. Power-off the computer. Disconnect the power cord.
3. Check the power cord for: a. A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0.1 ohm or less between the external ground pin and frame ground.
b. The power cord should be the appropriate type as specified in the parts listings.
c. Insulation must not be frayed or worn.
4. Remove the cover.
5. Check for any obvious alterations. Use good judgment as to the safety of any alterations.
6. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.
7. Check for worn, frayed, or pinched cables.
8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.
Handling electrostatic discharge-sensitive devices
Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects.
Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
Notes:
1. Use product-specific ESD procedures when they exceed the requirements noted here.
2. Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.
When handling ESD-sensitive parts:
• Keep the parts in protective packages until they are inserted into the product.
Chapter 2 .
Safety information
5
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Key Features
- All-in-One PC Black 150 W
- Intel® Core™ i3 i3-4160 3.6 GHz
- 50.8 cm (20") HD+ 1600 x 900
- 4 GB DDR3-SDRAM 1600 MHz 1 x 4 GB
- 500 GB HDD DVD±RW Card reader integrated
- Intel® HD Graphics 4400
- 1 MP 1280 x 720 pixels
- Ethernet LAN 10,100,1000 Mbit/s Bluetooth 4.0
- FreeDOS
Related manuals
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Table of contents
- 5 Important safety information
- 7 General safety
- 7 Electrical safety
- 9 Safety inspection guide
- 9 Handling electrostatic discharge-sensitive devices
- 10 Grounding requirements
- 10 Safety notices (multi-lingual translations)
- 33 Specifications
- 33 Lenovo programs
- 34 Accessing Lenovo programs on the Windows 7 operating system
- 35 Accessing Lenovo programs on the Windows 8 or Windows 8.1 operating system
- 35 Lenovo Support Web site
- 37 Problem determination tips
- 39 Basic troubleshooting
- 40 Accessing Control Panel on the Windows 8 or Windows 8.1 operating system
- 40 Troubleshooting procedure
- 41 Troubleshooting
- 41 Audio problems
- 43 CD problems
- 44 DVD problems
- 45 Intermittent problems
- 45 Hard disk drive problems
- 46 Keyboard, mouse, or pointing device problems
- 48 Monitor problems
- 50 Networking problems
- 52 Option problems
- 53 Performance and lockup problems
- 55 Printer problems
- 55 Serial port problems
- 56 Software problems
- 57 USB problems
- 57 Diagnostics
- 58 Lenovo Solution Center
- 59 Starting the Setup Utility program
- 59 Viewing and changing settings
- 59 Using passwords
- 60 Password considerations
- 60 Power-on password
- 60 Administrator password
- 60 Setting, changing, and deleting a password
- 60 Erasing lost or forgotten passwords (clearing CMOS)
- 61 Enabling or disabling a device
- 61 Selecting a startup device
- 62 Selecting a temporary startup device
- 62 Selecting or changing the startup device sequence
- 62 Changing the BIOS settings before installing a new operating system
- 62 Exiting the Setup Utility program
- 63 Hard disk drive boot error
- 63 Power supply problems
- 63 Beep symptoms
- 64 POST error codes
- 65 Miscellaneous error conditions
- 67 Undetermined problems
- 69 Locating connectors, controls, and indicators on the front of your computer
- 70 Locating connectors on the rear of your computer
- 70 Locating major FRUs and CRUs
- 73 Looking up FRU information
- 73 Locating parts on the system board
- 75 Removing and installing the computer stand
- 75 Removing and reinstalling the frame stand
- 77 Removing and installing the monitor stand
- 79 Removing the computer cover
- 79 Removing and reinstalling the feet stand
- 80 Removing and installing the hard-disk-drive EMI shield
- 82 Replacing the 3.5-inch hard disk drive or hybrid hard disk drive
- 84 Replacing the 2.5-inch solid-state drive or hybrid hard disk drive
- 86 Replacing the optical drive
- 87 Removing and reinstalling the system board shield
- 88 Replacing the rear I/O assembly
- 90 Removing the VESA mount bracket
- 91 Replacing the power supply
- 92 Replacing the microprocessor fan
- 94 Replacing the heat sink assembly
- 95 Replacing the microprocessor
- 98 Replacing the card reader
- 99 Replacing the battery
- 100 Replacing the converter board
- 101 Installing or replacing a memory module
- 103 Replacing the internal speakers
- 104 Replacing the integrated camera
- 105 Replacing the system board
- 107 Replacing the LCD panel
- 111 Replacing the Wi-Fi card
- 112 Completing the parts replacement
- 115 Security features
- 115 Hardware controlled passwords
- 115 Operating system password
- 115 Vital product data
- 115 BIOS levels
- 115 Flash update procedures
- 116 Updating (flashing) the BIOS from a disc
- 117 Updating (flashing) the BIOS from your operating system
- 117 Recovering from a POST/BIOS update failure
- 118 Power management
- 118 Automatic configuration and power interface (ACPI) BIOS
- 118 Automatic Power-on features
- 120 Television output notice
- 120 European conformance CE mark
- 120 Trademarks